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Methyl orange is a pH indicator frequently used in titrations.
Additional recommended knowledge
It is often chosen to be used in titrations because of its clear colour change. Because it changes colour at the pH of a mid-strength acid, it is usually used in titrations for acids. Unlike a universal indicator, methyl orange does not have a full spectrum of colour change, but has a sharper end point.
In a solution becoming less acidic, methyl orange moves from red to orange and finally to yellow with the reverse occurring for a solution increasing in acidity. It should be noted that the entire colour change occurs in acidic conditions.
In an acid it is reddish and in alkali it is yellow.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Methyl_orange". A list of authors is available in Wikipedia.|